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CUET
Physics
Dual Nature of Radiation and Matter
a
b
c
d
$ P = \frac{Nhc}{\lambda}$
P is same for both source.
$\Rightarrow \frac{N_1}{N_2} = \frac{\lambda_1}{\lambda_2} = \frac{1nm}{500 nm} = \frac{1}{500}$